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CounterMail vs Tuta Mail: catalog facts
CounterMail	Tuta Mail
Paid Paid accounts; prices are listed on the provider's site.	Freemium A free plan is available, with paid plans that support custom domains.
Web	Windows, macOS, Linux, Android, iOS, Web
Automatic OpenPGP encryption with 4096-bit keys Diskless web servers that boot from CD-ROM	End-to-end encrypted email Includes calendar and contacts
Paid service Closed source hosted service	Requires a Tuta account Custom domain support is part of paid plans
Web application, Hosted service	Downloadable app, Web application, Hosted service
Closed source	Open source
License not stated	License not stated
Account needed	Account needed
Needs internet	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.